40 results about "Digital instrumentation" patented technology

A digital guitar includes a two or three-axis input on the body and an array of inputs on the neck. The two or three axis input serves as an actuator to commence generation of an output representing sounds. The array of inputs on the neck provide for player control of the sounds represented by the output. The different axes of the two or three axis input provide for an ability to configure the instrument to simultaneously control multiple different characteristics of the output from the guitar. The two or three axis input on the body of the guitar may be a touch pad or touch and display screen. The display screen provides visual feedback to the player.

A system and method for obtaining a sight screening as well as previous and current optical prescriptions (specifications) for virtual try-on and purchase of glasses and contact lenses operated by one's self, through a voice-activated response self-refraction, or a technician / optician assisted refraction, at a convenient location or possibly several different customer diagnostic, electronic store locations where digital instruments interface and may transfer either directly back to the customer, or to a remote, interactive audio-video diagnosing and assisting, consulting eye doctor (ophthalmologist or optometrist) who interprets the digital data, diagnoses, consults, delivers health care, and authorizes the specifications, whereby the store technician / optician gathers data for purchase and electronically sends the data to a lens lab for fabrication and delivery of glasses or contact lenses to the store or directly to the customer; and, the customer can purchase selected glasses or contact lenses from any internet PC address, whereby the technician provides the customer with a CD containing customer data and digital imaging for reorders either through a PC or a selected retail location.

A test system with multiple instruments. Some instruments act as controller instruments and others act as controlled instruments. Each instrument includes a clock generator that synthesizes one or more local clocks from a reference clock. The reference clock is a relatively low frequency clock that can be inexpensively but accurately generated and distributed to all of the instruments. A communication link between instruments is provided. Timing circuits within instruments that are to exchange time information are synchronized to establish a common time reference. Thereafter, instruments communicate time dependent commands or status messages asynchronously over the communication link by appending to each message a time stamp reflecting a time expressed relative to the common time reference. The test system includes digital instruments that contain pattern generators that send command messages to analog instruments, which need not include pattern generators. The architecture simplifies design of analog instruments and avoids redesign of analog instrument as pattern rates of digital instruments change.

A system and method for obtaining a sight screening as well as previous and current optical prescriptions (specifications) for purchase of glasses and contact lenses operated by one's self, through a voice-activated response self-refraction, or a technician / optician assisted refraction, at a convenient location or possibly several different customer diagnostic, electronic store locations where digital instruments interface and may transfer either directly back to the customer, or to a remote, interactive audio-video diagnosing and assisting, consulting eye doctor (ophthalmologist or optometrist) who interprets the digital data, diagnoses, consults, delivers health care, and authorizes the specifications, whereby the store technician / optician gathers data for purchase and electronically sends the data to a lens lab for fabrication and delivery of glasses or contact lenses to the store or directly to the customer.

A test system with multiple instruments. Some instruments act as controller instruments and others act as controlled instruments. Each instrument includes a clock generator that synthesizes one or more local clocks from a reference clock. The reference clock is a relatively low frequency clock that can be inexpensively but accurately generated and distributed to all of the instruments. A communication link between instruments is provided. Timing circuits within instruments that are to exchange time information are synchronized to establish a common time reference. Thereafter, instruments communicate time dependent commands or status messages asynchronously over the communication link by appending to each message a time stamp reflecting a time expressed relative to the common time reference. The test system includes digital instruments that contain pattern generators that send command messages to analog instruments, which need not include pattern generators. The architecture simplifies design of analog instruments and avoids redesign of analog instrument as pattern rates of digital instruments change.

A test system with multiple instruments. Some instruments act as controller instruments and others act as controlled instruments. Each instrument includes a clock generator that synthesizes one or more local clocks from a reference clock. The reference clock is a relatively low frequency clock that can be inexpensively but accurately generated and distributed to all of the instruments. A communication link between instruments is provided. Timing circuits within instruments that are to exchange time information are synchronized to establish a common time reference. Thereafter, instruments communicate time dependent commands or status messages asynchronously over the communication link by appending to each message a time stamp reflecting a time expressed relative to the common time reference. The test system includes digital instruments that contain pattern generators that send command messages to analog instruments, which need not include pattern generators. The architecture simplifies design of analog instruments and avoids redesign of analog instrument as pattern rates of digital instruments change.

A nuclear instrumentation and control system, comprising: an input module, receiving analog inputs from sensors and digital signals from hardware switches; a dual redundant bi-stable processor, connecting to the input module; a dual redundant local coincidence logic processor, connecting to the dual redundant b0-stable processor; an output module, connecting to the dual redundant local coincidence logic processor; an integrated communication processor, connecting to the dual redundant bi-stable processor and the dual redundant local coincidence logic processor; an interface and test panel, connecting to the dual redundant bi-stable processor, the dual redundant local coincidence logic processor and the integrated communication processor; and a video display unit, connecting to the dual redundant bi-stable processor, the dual redundant local coincidence logic processor, the integrated communication processor and the interface and test panel. Thereby, a qualification and certification tools for design and development of safety related equipment and explains the basis for many decisions made while performing the digital upgrade.

In an implementation of this invention, a stringed musical instrument has a resonator comprised of a bridge and a soundboard. Vibrations from the strings are transmitted through the bridge to the soundboard. A plurality of sensors are attached to or embedded in the soundboard. The sensors measure primarily the vibrations of the soundboard, rather than primarily the vibrations of the strings. Preferably, three or more sensors are used. Piezoelectric sensors sample vibrations in the soundboard. The resonator includes a printed circuit board that amplifies the signal from each sensor separately. Also, a signal processing device that is “onboard” the musical instrument processes the separate input signals to create one output signal. The resonator may be easily removed, enabling resonators to be interchanged. Also, the physical characteristics of a particular resonator, such as its mass or its boundary condition, may be adjusted, thereby changing the acoustic qualities of the soundboard.

A test system using direct digital synthesis for generation of a spectrally pure, agile clock. The clock is used in analog and digital instruments in automatic test system. A DDS circuit is synchronized to the tester system clock because it is clocked by a DDS clock generated from the system clock. Accumulated phase error is reduced through the use of a parallel accumulator that tracks accumulated phase relative to the system clock. At coincidence points, the accumulated phase in the DDS accumulator is reset to the value in the system accumulator.

A test system using direct digital synthesis for generation of a spectrally pure, agile clock. The clock is used in analog and digital instruments in automatic test system. A DDS circuit is synchronized to the tester system clock because it is clocked by a DDS clock generated from the system clock. Accumulated phase error is reduced through the use of a parallel accumulator that tracks accumulated phase relative to the system clock. At coincidence points, the accumulated phase in the DDS accumulator is reset to the value in the system accumulator.

A substantially self-contained digital instrumentation module (30) for fixed and rotary wing aircraft provides flight and other situational information, such as attitude, altitude, airspeed, and slip information, during normal aircraft operation or during emergencies, such as a failure of the aircraft's primary instrumentation. The module (30) can be mounted in any of various possible orientations. It includes redundant memories (38,40,50,52) to preserve back-up copies of software and settings during upgrades and changes. It partitions certified software from non-certified software. It can receive software upgrades and settings changes via a common portable memory device. It can automatically calculate and synchronize barometric pressure with the aircraft's primary instrumentation. It also allows for creating a customizable dimming curve (220,222), and for creating customizable range markings (114).

The invention discloses a damped oscillatory wave lower local cable local discharge detection device and method. The detection device comprises a signal coupling unit and a broadband amplifying unit; the signal coupling unit comprises a detection impeder and a coupling capacitor, one end of the detection impeder is connected with the low-voltage side of the coupling capacitor, and the other end of the detection impeder is connected to the ground; the broadband amplifying unit comprises an attenuator, an attenuator driving circuit, a latch and an amplifier. The signal coupling unit is coupled with original signals which discharges locally and is coupled with reflection signals at the end portion of a cable. The coupled locally-discharged signals are amplified for a proper time by the amplifier and passes through the effective frequency band of the amplifier, a large amount of interfering signals and background noise are removed through filtering, and the signal to noise ratio of the locally-discharged signals is sufficiently improved. Finally, the amplified signals are transmitted to the input end of a collecting card so that a digital meter can process the locally-discharged signals.

Nuclear spectroscopy systems have improved over the course of time especially with the advent of digital pulse processing. One disadvantage of digital processing, however, is that it has eliminated the older, universally compatible interface standard of analog signals. Digital component interfaces are often defined by computer software, protected by copyright and unique to a single manufacturer. Consequently, all components of an entire spectroscopy system must be from a single manufacturer. This not only dictates system wide component replacement, but also impedes optimization that would otherwise occur were component compatibility the rule rather than the exception. The present innovation describes a method and apparatus to relieve the present incompatibility between digital components of a nuclear spectroscopy system that are supplied by more than one manufacturer.

The present invention relates to a digital instrument for use in physical therapy, including a gripping force measurement bar which measures the gripping force of a hand when the bar is grasped, a sensor portion which measures the rotation of a wrist when the wrist is turned while the gripping force measuring bar is grasped, a display device which visually displays the degree of the gripping force or the extent to which the wrist is rotated, and a memory portion which stores the degree of the gripping force of a measured value relating to the rotation of the wrist. The invention also relates to a physical therapy method using the instrument. According to the present invention, the degree of motion is assessed on a real-time basis, the degree of motion is easily controlled, and an exercise activity is rendered more interesting since the degree of the gripping force or the extent to which the wrist is rotated is measured and visually displayed.

In an implementation of this invention, a stringed musical instrument has a resonator comprised of a bridge and a soundboard. Vibrations from the strings are transmitted through the bridge to the soundboard. A plurality of sensors are attached to or embedded in the soundboard. The sensors measure primarily the vibrations of the soundboard, rather than primarily the vibrations of the strings. Preferably, three or more sensors are used. Piezoelectric sensors sample vibrations in the soundboard. The resonator includes a printed circuit board that amplifies the signal from each sensor separately. Also, a signal processing device that is “onboard” the musical instrument processes the separate input signals to create one output signal. The resonator may be easily removed, enabling resonators to be interchanged. Also, the physical characteristics of a particular resonator, such as its mass or its boundary condition, may be adjusted, thereby changing the acoustic qualities of the soundboard.

The invention relates to a multifunctional input / output interface board, which comprises an optoelectronic isolation input circuit, a logic control circuit, a display and communication circuit, and an output control circuit, wherein the optoelectronic isolation input circuit consists of an optoelectronic isolator and a light-emitting diode connected in series, the input end of the optoelectronic isolation input circuit is connected to an external sensor, and the optoelectronic isolation input circuit is used for performing anti-interference filtration and noise reduction treatment on input external signals; the logic control circuit receives signals processed by the optoelectronic isolation input circuit to realize input / output control; the display and communication circuit receives control signals of the logic control circuit and performs parameter configuration and communication with external equipment; and the input end of the output control circuit receives the control signals of the logic control circuit and the output control circuit outputs switch control signals to on-site external serial-port equipment. The multifunctional input / output interface board can be used for signal input of various sensors, automatic control of switch signals and communication interfaces with digital instruments on industrial site, and solves the problems that interface signal levels on the industrial site are not matched or common-grounded, interference of the various noise signals in the prior art is not eliminated, and the like.

The invention discloses a handheld neurologic function evaluation device. The device comprises a host, a sleeve and a hard template, wherein the host comprises a liquid crystal screen, an accelerometer, a gyroscope and a data processing circuit; the host is fixedly bound on the far end of an arm by virtue of the sleeve; the hard template is provided with a spiral line. When the device is used, the hard template is put on a table flatwise, and arms of a patient are suspended; a single finger of the patient touches the hard template and rotates once from the inside to the outside along a track, and then rotates once from the outside to the inside; the track of arm movement is obtained by calculation of the accelerometer and the gyroscope; and the data processing circuit performs power spectrum analysis to the track of arm movement, and sends out a report of the degree of tremor through the liquid crystal screen, so that the degree of tremor is judged. The handheld neurologic function evaluation device can be used as a portable noninvasive digital instrument for evaluating movement function abnormality (such as Parkinson's disease and the like) and is convenient to use, operate and carry.

The CPU includes: a data transmission instruction output processor; a failure detection signal input processor to which a failure detection signal is input from a failure detection processor for detecting a failure of an input unit; a data storage memory for, each time an input data update processor of the input unit updates data, storing the updated data; and a CPU operation processor for obtaining input data from the data storage memory and obtaining a detection signal from the failure detection signal input processor to perform operation processing. The CPU operation processor obtains periodic data as of an amount of time given by the following expression ago:{ROUNDUP(T22 / T1)}×T1 where T22 is the failure detection processing time of the failure detection processor, T1 is the data transmission instruction output period of the data transmission instruction output processor, and ROUNDUP is a function of rounding up to the nearest integer.

A test system with multiple instruments. Some instruments act as controller instruments and others act as controlled instruments. Each instrument includes a clock generator that synthesizes one or more local clocks from a reference clock. The reference clock is a relatively low frequency clock that can be inexpensively but accurately generated and distributed to all of the instruments. A communication link between instruments is provided. Timing circuits within instruments that are to exchange time information are synchronized to establish a common time reference. Thereafter, instruments communicate time dependent commands or status messages asynchronously over the communication link by appending to each message a time stamp reflecting a time expressed relative to the common time reference. The test system includes digital instruments that contain pattern generators that send command messages to analog instruments, which need not include pattern generators. The architecture simplifies design of analog instruments and avoids redesign of analog instrument as pattern rates of digital instruments change.

A gauge is disclosed that includes a combination analog-digital instrument display with an analog dial and a digital display; and a rotary selector. The rotary selector defines a central aperture; frames the combination analog-digital instrument display such that both the analog dial and the digital display are simultaneously viewable through the central aperture; and is rotatable about the combination analog-digital instrument display such that at least one of a rotation and a depression of the rotary selector selects, as an input for the digital display, one of a plurality of vehicle sensors disposed within an automotive vehicle on which the gauge is mounted. Each of the plurality of vehicle sensors measures a different physical quantity associated with the automotive vehicle.

A test technique may be implemented in an automated test system for testing semiconductor devices. The test technique may enable the fast detection of a signal transition, such as an edge, within a waveform and the timing of that event. Circuitry within a digital instrument that can be quickly and flexibly programmed may, at least in part, implement the test technique. That circuitry may be simply programmed with testing parameters, such that application of the technique may lead to faster test development and faster times. In operation, that circuitry receives parameters specifying parameters of a window over a waveform in which samples of the waveform will be taken to detect the signal transition. The circuitry may convert these parameters into control signals for other components in the test system, such as an edge generator or pin electronics, to take a programmed number of samples at desired times.

The invention relates to an elimination method of clock jitter in a radio frequency direct band pass sampling digital receiving system. The method realizes elimination of the clock jitter in the radio frequency direct band pass sampling digital receiving system through adopting the non-uniform sampling output value of the radio frequency direct band pass sampling digital receiving system, the band pass sampling theory, the digital down-conversion theory and the feature of the radio frequency direct band pass sampling digital receiving system. The method can select different cascading series according to an actual radio frequency direct band pass sampling digital receiving demand so as to satisfy the demanded clock jitter elimination performance. The method of the invention is low in actual realization complexity and good in elimination effect, is easy for a hardware to realize, imposes no restriction on the type of the input signal of the radio frequency direct band pass sampling digital receiving system and is especially suitable for application of the radio frequency direct band pass sampling digital receiving system in modern communication, radar and high precision digital instrument.

A substantially self-contained digital instrumentation module (30) for fixed and rotary wing aircraft provides flight and other situational information, such as attitude, altitude, airspeed, and slip information, during normal aircraft operation or during emergencies, such as a failure of the aircraft's primary instrumentation. The module (30) can be mounted in any of various possible orientations. It includes redundant memories (38,40,50,52) to preserve back-up copies of software and settings during upgrades and changes. It partitions certified software from non-certified software. It can receive software upgrades and settings changes via a common portable memory device. It can automatically calculate and synchronize barometric pressure with the aircraft's primary instrumentation. It also allows for creating a customizable dimming curve (220,222), and for creating customizable range markings (114).

The present invention obtains a data polling method and a digital instrumentation and control system for an atomic power plant using the method. A CPU includes: a data transmission instruction output processor; a failure detection signal input processor to which a failure detection signal is input from a failure detection processor for detecting a failure of an input unit; a data storage memory for, each time an input data update processor of the input unit updates data, storing the updated data; and a CPU operation processor for obtaining input data from the data storage memory and obtaining a detection signal from the failure detection signal input processor to perform operation processing. The CPU operation processor obtains periodic data as of an amount of time given by the following expression ago: {ROUNDUP(T22 / T1)}T1, where T22 is the failure detection processing time of the failure detection processor, T1 is the data transmission instruction output period of the data transmission instruction output processor, and ROUNDUP is a function of rounding up to the nearest integer.

A digital instrument with a flashing relay function for a motorcycle, the motorcycle is provided with front and rear turning lights, and the digital instrument includes a digital instrument body and a digital instrument turn signal control module; the digital instrument body is provided with Digital instrument turn indicator light; the digital instrument turn light control module is used to receive the steering control signal input from the outside, and process and judge according to the steering control signal, so as to confirm whether to control the said turn signal according to the normal state or the light-off state. The blinking frequency of the digital instrument turn indicators and the front and rear turn signals. In the digital meter provided by the present invention, the function of the existing flasher relay is integrated on the digital meter, so that the existing flasher relay parts are reduced in the design of the whole vehicle, and the design of the digital meter can be considered as a whole, which simplifies The design circuit of the whole vehicle saves the cost of the whole vehicle, makes it easier to arrange the components during the development of the whole vehicle, and at the same time increases the assembly speed during the assembly of the whole vehicle.

A test technique that may be implemented in an automated test system for testing semiconductor devices. The test technique may enable the fast detection of a signal transition, such as an edge, within a waveform and the timing of that event. Circuitry within a digital instrument that can be quickly and flexibly programmed may, at least in part, implement the test technique. That circuitry may be simply programmed with testing parameters, such that application of the technique may lead to faster test development and faster times. In operation, that circuitry receives parameters specifying parameters of a window over a waveform in which samples of the waveform will be taken to detect the signal transition. The circuitry may convert these parameters into control signals for other components in the test system, such as an edge generator or pin electronics, to take a programmed number of samples at desired times.

The CPU includes: a data transmission instruction output processor; a failure detection signal input processor to which a failure detection signal is input from a failure detection processor for detecting a failure of an input unit; a data storage memory for, each time an input data update processor of the input unit updates data, storing the updated data; and a CPU operation processor for obtaining input data from the data storage memory and obtaining a detection signal from the failure detection signal input processor to perform operation processing. The CPU operation processor obtains periodic data as of an amount of time given by the following expression ago:{ROUNDUP(T22 / T1)}×T1 where T22 is the failure detection processing time of the failure detection processor, T1 is the data transmission instruction output period of the data transmission instruction output processor, and ROUNDUP is a function of rounding up to the nearest integer.

The invention relates to a reactor dynamic interlock system and method based on a digital instrumentation and control system. The reactor dynamic interlock system comprises a fault diagnosis module, a decision support module and a dynamic interlock module. When a reactor apparatus generates an abnormal status, the fault diagnosis module outputs possible fault reasons, the decision support module lists corresponding emergency operation procedures, after an operator determines an emergency operation procedure according to a judgment, and the dynamic interlock module automatically executes the emergency operation procedure through a controller and downloads a monitoring configuration shielding dangerous operation for an operator station, such that the execution efficiency of the emergency operation procedure can be effectively improved, wrong operation of the operator can be prevented, and safe operation of a reactor is guaranteed.

The invention provides an intelligent digital display instrument controlled by a single-chip micro-controller, which is characterized in that a digital display signal obtained through a CAN communication interface or an analog input channel is subjected to online calibration, compensation and calibration, and nonlinear correction. , split-range display and other digital signal processing, using scanning matrix control, to achieve up to 240 high-precision LED ring light strip and 3-digit two-color seven-segment digital tube display. The instrument has the advantages of high precision, good stability and full digitalization. At the same time, the fixed module structure adopted by the instrument and the control method of the instrument characteristic value database improve the flexibility of the instrument, simplify the production process, and are beneficial to many varieties. The mass production of the instrument greatly saves the operating cost of the communication between the instrument and the system, expands the application of the display instrument in the digital field, and is a major technological progress of the display instrument.